problems when converting a word file with visio objects to pdf

Hi, all

I got a very strange problem when trying to convert a word file
with embedded visio objects into a PDF file using PDF maker.
The visio objects embedded in the word file just cannot be
converted correctly. The lines, boxes etc. in the visio drawing
can be converted correctly, but all the texts are enlarged wildly.
For example, I draw a 1cm * 1cm box in visio and type some
texts inside the box, then paste the visio object into a word file.
After conversion, the box looks just fine, but the text inside the
box is enlarged a lot and can be outside the box.

The funny thing is, if I convert the visio object directly in visio
rather than in a word file, it works well. So this problem only
happens when a visio object embedded into a word file.
I really got confused... anybody has a clue?

I am using: word 2002, SP-1 and visio SR-1 and acrobat 6.0.
My OS is windows xp professional english version, but with
asian language support.

Thanks so much

Tao